diff --git a/src/lib/commands/cede.c b/src/lib/commands/cede.c
index 8d5e1355..82a3dc32 100644
--- a/src/lib/commands/cede.c
+++ b/src/lib/commands/cede.c
@@ -164,7 +164,7 @@ cede_sect(struct nstr_sect *ns, natid to)
 	putsect(&sect);
 	pr("  %s %d%% ceded\n", xyas(sect.sct_x, sect.sct_y, player->cnum),
 	   (int)sect.sct_effic);
-	wu(0, (natid)to, "%s ceded to you by %s\n",
+	wu(0, to, "%s ceded to you by %s\n",
 	   xyas(sect.sct_x, sect.sct_y, to), cname(player->cnum));
     }
     pr("%d sector%s\n", nsect, splur(nsect));
diff --git a/src/lib/player/login.c b/src/lib/player/login.c
index 7f66a23a..c08eaf6f 100644
--- a/src/lib/player/login.c
+++ b/src/lib/player/login.c
@@ -342,7 +342,7 @@ play_cmd(void)
     }
     if (!may_play())
 	return RET_FAIL;
-    other = getplayer((natid)player->cnum);
+    other = getplayer(player->cnum);
     if (other) {
 	natp = getnatp(player->cnum);
 	if (natp->nat_stat != STAT_VIS) {
diff --git a/src/lib/update/nat.c b/src/lib/update/nat.c
index 6e898544..bb45748c 100644
--- a/src/lib/update/nat.c
+++ b/src/lib/update/nat.c
@@ -152,7 +152,7 @@ prod_nat(int etu)
 	hap = levels[n][NAT_HLEV] * hap_edu * hap_cons /
 	    ((float)pop * etu);
 	edu = levels[n][NAT_ELEV] * edu_cons / ((float)pop * etu);
-	wu((natid)0, n, "%3.0f happiness, %3.0f education produced\n",
+	wu(0, n, "%3.0f happiness, %3.0f education produced\n",
 	   levels[n][NAT_HLEV], levels[n][NAT_ELEV]);
 	hap = limit_level(hap, NAT_HLEV, 1);
 	edu = limit_level(edu, NAT_ELEV, 1);
@@ -174,8 +174,7 @@ prod_nat(int etu)
 	    limit_level(levels[n][NAT_TLEV] / 1, NAT_TLEV, 0) * 1;
 	levels[n][NAT_RLEV] =
 	    limit_level(levels[n][NAT_RLEV] / 1, NAT_RLEV, 0) * 1;
-	wu((natid)0, n,
-	   "total pop was %ld, yielding %4.2f hap, %4.2f edu\n",
+	wu(0, n, "total pop was %ld, yielding %4.2f hap, %4.2f edu\n",
 	   pop - 1, hap, edu);
     }
     if (ally_factor > 0.0)
@@ -190,15 +189,12 @@ prod_nat(int etu)
 	tlev = levels[n][NAT_TLEV];
 	rlev = levels[n][NAT_RLEV];
 	if (tech[n] != 0.0 || res[n] != 0.0) {
-	    wu((natid)0, n,
-	       "%5.4f technology (%5.4f + %5.4f), ",
+	    wu(0, n, "%5.4f technology (%5.4f + %5.4f), ",
 	       tlev + tech[n], tlev, tech[n]);
-	    wu((natid)0, n,
-	       "%5.4f research (%5.4f + %5.4f) produced\n",
+	    wu(0, n, "%5.4f research (%5.4f + %5.4f) produced\n",
 	       rlev + res[n], rlev, res[n]);
 	} else
-	    wu((natid)0, n,
-	       "%5.4f tech, %5.4f research produced\n", tlev, rlev);
+	    wu(0, n, "%5.4f tech, %5.4f research produced\n", tlev, rlev);
 	rlev += res[n];
 	tlev += tech[n];
 	if (rlev != 0.0)
@@ -207,10 +203,10 @@ prod_nat(int etu)
 	    np->nat_level[NAT_TLEV] += tlev;
 	if ((sea_money[n] != 0) || (air_money[n] != 0) ||
 	    (lnd_money[n] != 0))
-	    wu((natid)0, n,
+	    wu(0, n,
 	       "Army delta $%ld, Navy delta $%ld, Air force delta $%ld\n",
 	       lnd_money[n], sea_money[n], air_money[n]);
-	wu((natid)0, n, "money delta was $%ld for this update\n",
+	wu(0, n, "money delta was $%ld for this update\n",
 	   np->nat_money - money[n]);
 	if (opt_LOSE_CONTACT) {
 	    for (cn = 1; cn < MAXNOC; cn++) {
diff --git a/src/lib/update/produce.c b/src/lib/update/produce.c
index 57241f8b..0feebf5b 100644
--- a/src/lib/update/produce.c
+++ b/src/lib/update/produce.c
@@ -114,7 +114,7 @@ produce(struct natstr *np, struct sctstr *sp, short *vec, int work,
 	actual = ldround(output, 1);
 	if (!player->simulation) {
 	    levels[sp->sct_own][product->p_level] += output;
-	    wu((natid)0, sp->sct_own, "%s (%.2f) produced in %s\n",
+	    wu(0, sp->sct_own, "%s (%.2f) produced in %s\n",
 	       product->p_name, output, ownxy(sp));
 	}
     } else {